The concerning bird flu outbreak that has spread to four humans so far as it expands quickly in the U.S. has jumped to dozens of species, infecting mammals in at least 31 states.

Bird flu, a highly contagious form of avian influenza, has demonstrated worrying zoonotic spread in recent weeks. The virus is spreading quickly throughout the United States, affecting a few human ...

Bird flu is continuing to spread in animals across the United States more than a year after the first human case was detected. Since then, at least 70 people have fallen ill and at least one death ...

The U.S. reported the first outbreak of the deadly H7N9 bird flu on a poultry farm since 2017, ... Its spread to mammals, ... The latest outbreak of H7N9 in the United States, ...

Bird flu has affected more than 100 million wild aquatic birds, commercial flocks and backyard poultry in the U.S. over the last several years. Its spread has had scientists on alert about the ...

As bird flu cases inundate more poultry and dairy farms, state officials worry that the Trump administration’s firings of federal scientists and other actions will undermine efforts to track the ...

Bird flu was first detected in Texas dairies in the spring after officials believe one herd was infected by wild birds. So far, 16 states have had outbreaks in cows, with 865 herds affected. Three ...

More states are finding bird flu in cattle. This is what scientists are watching for. Updated April 11, ... How mammals may spread it among themselves: Clues from ferrets .

As bird flu spreads in cattle, some states still aren't part of US milk testing Three of America’s top milk-producing states are not participating in the U.S. Department of Agriculture’s ...